我需要改变一栏的类型。 如果目前的一栏类型是DECIMAL(8,2),而且我将该栏改为DOUBLE,该栏中已经存在的数据是否也将改变,以反映该栏的新类型?
应当这样做。 然而,在改变现有表格时总是安全。
我倾向于采取这种行动的方式是:
I noticed that there were some threads with similar questions, and I did look through them but did not really get a convincing answer. Here s my question: The subquery below returns a Table with 3 ...
<?php $con=mysql_connect("localhost","mts","mts"); if(!con) { die( unable to connect . mysql_error()); } mysql_select_db("mts",$con); /* date_default_timezone_set ("Asia/Calcutta"); $date = ...
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